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/*
* Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) 2005 Eric Seidel <eric@webkit.org>
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_FILTERS_FE_COMPOSITE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_FILTERS_FE_COMPOSITE_H_
#include "SkBlendMode.h"
#include "third_party/blink/renderer/platform/graphics/filters/filter_effect.h"
namespace blink {
enum CompositeOperationType {
FECOMPOSITE_OPERATOR_UNKNOWN = 0,
FECOMPOSITE_OPERATOR_OVER = 1,
FECOMPOSITE_OPERATOR_IN = 2,
FECOMPOSITE_OPERATOR_OUT = 3,
FECOMPOSITE_OPERATOR_ATOP = 4,
FECOMPOSITE_OPERATOR_XOR = 5,
FECOMPOSITE_OPERATOR_ARITHMETIC = 6,
FECOMPOSITE_OPERATOR_LIGHTER = 7
};
class PLATFORM_EXPORT FEComposite final : public FilterEffect {
public:
static FEComposite* Create(Filter*,
const CompositeOperationType&,
float,
float,
float,
float);
CompositeOperationType Operation() const;
bool SetOperation(CompositeOperationType);
float K1() const;
bool SetK1(float);
float K2() const;
bool SetK2(float);
float K3() const;
bool SetK3(float);
float K4() const;
bool SetK4(float);
WTF::TextStream& ExternalRepresentation(WTF::TextStream&,
int indention) const override;
protected:
bool MayProduceInvalidPreMultipliedPixels() override {
return type_ == FECOMPOSITE_OPERATOR_ARITHMETIC;
}
private:
FEComposite(Filter*,
const CompositeOperationType&,
float,
float,
float,
float);
FloatRect MapInputs(const FloatRect&) const override;
bool AffectsTransparentPixels() const override;
sk_sp<PaintFilter> CreateImageFilter() override;
sk_sp<PaintFilter> CreateImageFilterWithoutValidation() override;
sk_sp<PaintFilter> CreateImageFilterInternal(
bool requires_pm_color_validation);
CompositeOperationType type_;
float k1_;
float k2_;
float k3_;
float k4_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_FILTERS_FE_COMPOSITE_H_
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